Bitumastic

BITUMASTIC

Elastic Bitumen Mastic

Cat No. 228

Bitumastic is a bituminous elastomeric sealant with a flexibility and elasticity in a wide range of temperatures.

Application is simple and easy, required no heating. Bitumastic is also suitable for application on vertical surfaces. It is applied cold, and is neither intoxicating nor flammable.

Application

Bitumastic is used to waterproof basement walls, shwers and patio floors (prior to tiling)

Technical Specifications

Appearance:

Brownish – black paste – like, shiny

Specific weight:

1.18 gr/ml

Viscosity:

Over 40,000 CPS

Solid contents (%):

65

Cold flexibility

-10ºC

Elongation at break

600%

Heat resistance at 80°c:

Non-skid, non-fluid

Resistance to water spray:

No noticeable change in the film after subjection to water spraying for 72 hours.

Resistance to ponding water:

Bitumastic is resistant to ponding water maintaining bonding to infrastructure

Resistance to water pressure:

(2mm thickness film)

1 atmosphere for 24 hours.

Resistance to impact:

Good

Method of Application

Before application, clear the surface thoroughly to remove all dirt. Roll with cement mortar at all wall-floor seams.

To waterproof basement walls:

In case the basement floor was sealed with bitumen membranes, apply low heat over the membranes to deposit the dirt and bring out melted bitumen.

Spray a coat of Bitumastic Primer over the basement walls and the sheets over the basement floor, using 250-300 gr/m². Allow to dry 30-60 minutes.

Spray Bitumastic, using a total quantity of 3-4.5 kg/m², depends on depth of the basement and waterable level. It is recommended to spray in 3 layers, allowing a short waiting interval between layers as initial drying.

Additionally, it is recommended to brush thoroughly the

first layer of Bitumastic towards the substrate (also when

applied by spraying), in order to prevent formation of

bubbles. Allow to dry for 5 days after application.

Spread a Geotextile Matt, 200 gr/sqm, over the waterproofing layer and then, spread protection and drainage sheet made of HDPE as “Bitudrain T-15” prior to covering. Alternatively, cover the waterproofing layer with foamed polystyrene boards, 3 cm thick, for protection of the water proofing layer, prior to covering.

To waterproof bathrooms & shower floors prior to tiling:

Apply a coat of Bitumastic Primer, using 300 gr/m², over horizontal surfaces and the rolled seams. Allow to dry 1-3 hours.

Apply a coat of Bitumastic, 1.5 kg/m², on the horizontal surfaces and rolled seams.. Allow to dry for 6-8 hours.

Apply a second coat of Bitumastic. 1.5 kg/m², Allow to dry 24 hours.
Fill in sand, lay the tiles, or lay ceramic tiles directly onto the sealing layer through adhesion.

To waterproof small patio floor prior to tiling:

General: The infrastructure shall be a stable concrete infrastructure and not foamed concrete (light concrete).

Apply or spray a coat of Bitumastic Primer using 250-300 gr/m², over the horizontal surfaces and the rolled seams. Allow to dry for 1-2 hours.

Apply a coat of Bitumastic on the horizontal surfaces and the rolled seams. Use 1.5 kg/m² of Bitumastic. Allow to dry for 4-6 hours.

Apply a second coat of Bitumastic, 1.5 kg/m². Allow to dry for 12 hours.

Apply (or apply by brush) a third coat of Bitumastic, Using 1.5 kg/m². In case this is the final coat, Allow to dry for 5 days (without rain) prior to tiling. In case there are additional coats, allow to dry for 6-8 hours.